#include <stdio.h>
int main() {
	int val = 0;
	int *p_val = &val;
	int **pp_val = &p_val;
	**pp_val = 10;
	printf("val是%d\n", val);
	printf("&val地址是%p\n", &val);
	printf("*p_val地址是%p\n", &(*p_val));
	printf("**pp_val地址是%p\n", &(**pp_val));
	printf("p_val地址是%p\n", &p_val);
	printf("*pp_val地址是%p\n", &(*pp_val));
	printf("pp_val地址是%p\n", pp_val);
	return 0;
}
